Good thought, tiss! I was going to ask her about that. I'm kind of pro SIBO now, BUT the incidence of SIBO and IBS going along together is so high (and I believe getting higher as more is being learned). I was thinking about that especially since her problem started after an illness... and possible infection.. I believe there was one there. I think SIBO should always be considered in chronic constipation IBS without a cause.. because there is a cause... they just don't know what it is most of the time.